Gloria has the highest number so the most earned in commission is D. Gloria.
The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Assuming that each salesperson earned a commission on all items he or she sold,
Bridget 9 x 50 = 450
Curtis 12 x 80 = 960
Gloria 10 x 140 = 1400
Hugo 6 x 60 = 360
Therefore, Gloria has the highest number.
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